<!DOCTYPE html>
<html lang="zh">
<head>
  <meta charset="UTF-8">
  <title>嵌套页面</title>
</head>
<body>
<iframe src="iframe/one.html" width="50%" height="50%">当前浏览器不支持框架</iframe>
<iframe src="iframe/two.html" width="50%" height="50%">当前浏览器不支持框架</iframe>
<iframe src="iframe/three.html" width="50%" height="50%">当前浏览器不支持框架</iframe>
<iframe src="iframe/four.html" width="50%" height="50%">当前浏览器不支持框架</iframe>
</body>
</html>